Wall subjected to high temperatures



Nov. 2, 1937. ASOL|N 2,097,631

WALL SUBJECTED TO HIGH TEMPERATURES Filed Nov. 13, `1936 2 Sheets-Sheet2 35 with its walls completely solid. Inservice, it ls Patented Nov.

f sl'llailne'frs'llT0 man.

I .'raurns'ruaas vThis invention relates to metal examples of suchwalls. Oneof the objects is to construct a wall that will not easilycrack `or break when subjected to high temperatures.

Various examples of the invention are illustrated by the accompanyingdrawings, in which:

Figure 1 is a partial top view' of a slag ladle embodying the featuresof the invention. vFinire 2 is a sectioned elevation of this ladle.

Figures 3 and 4' are sections taken respectively from the line III-IIIand IV-IV in Figure 2'. s

Figure 5 isa partial view of the outside of the ladle taken from theline V-V in Figure 2.

Figure 6 is a partial view of the topl of a slag vladle 'cover employingtheieatures of the lnvention.

Figure '7 is a cross-section VII-VII in Figure 6. p s

`Figure 8 is a pai-tial top view of a slag ladle cover embodying amodification ofthe principles shown by Figures 6 and 7; k I l Figure 9isla cross-sectiontaxen from the line IXIXinFlgure8..` 1 i `Theblast-furnace slag. ladle constituting the nrst example of the inventionhas a solidvmetal bottom l and a sidewall 2 that is provided with a`series oi' lengthwiseextendingslots 3. Each ot Y of suitable shape,which these slots is lilled with a plurality of parallel metal srips I.These strips extend edgewisedly towardthe inside ofthe ladle, their rearedges being xed to the wall 2 by welding metal deposited throughopenings 5 formed in this wall `at the bottoms of the recesses 3;

A blast-fumace slag ladle is ordinarilya made subjected to heavystresses resulting from its `tendency vto warp undertheeiiects of thema]exi vtoward breakage. In the case of the disclosed pansion andcontraction. Due to the fact that its walls are solid and rigid, piecesoiten break out. leaving holes which must be repaired. 4The ladledisclosed above is not so subject to -this trouble.

Its bottom I is solid because its shape is such as to enable it towithstand stresses encounteredin service, it being understood that it isusually the side wailoi'a ladle that is particularly inclined ladle,this side wall is composed primarilyjoi' metal strips orv laminations,which are anchored only at their rear edges whereby they are capable ofmoving individually to at least some extent and tothus individuallyaccommodate expansive and contractive eilects. Due to the fact thateach' strip contracts and expands as an individual unit,

taken from the line" .to iill the circular area deiined by this ring 9'.

' ring Il shown is the same as the ring 'neither single' stresses norstress concentrations can build up to values suiiiciently llarge tovcause the strips to tear from their proper positions. While retainingthe strength of a solid wall the side wall of the disclosed ladle issuiiiciently iiexg ible to prevent its being damagedin service.

` A second example of the invention is the cover for` a metal ladle.This covercomprises a relatively thin wall I of suitable shape. Aplurality ot metal strips lk are iixed to the high temper' m atured sideof this wall so `as to extend edgewisedly toward the high temperature.this being .done by the deposition of welding metal through openings tformed in the `wall 6, so as to unite the edges of the strips l remotefrom the high tem- `perature. A depending tapering ring 9.is` weldedaround the outside of the group of laminations provided by the strips Iso as to render the cover more serviceable. It is to be understood thatthe strips 1 are cut in such lengths as to permit them 20 This ladlecoverpossesses 'the same advantages as are possessed by the previouslydescribed slag ladle. That is to say, the metallic wall that mustlresist high temperatures is composed primarily of 25 a-number of smallpieces of metal, none of which are of suilicient size to result inbreaking stresses being produced upon temperature variations.

The modified ladle cover consists in a. wall I0 mounts a single metal 30strip II arranged in the form of a coil. Bars I2 may beweldedtransversely tothe coil of strip and their opposite sides then welded tothe wall I Il by thedeposition of welding metal through holes I3 in thiswall, which register with the bars. The 35 Sand accomplishes the samepurpose. This modification is further characterized in that metal sheetsI5 are loosely laid on top of the edge of the coil of metal strip II,andinsulating material I6 is placed 40 in the space between the wall Illand these'sheets Il; the latter retainingthis material in place.

s Although dat striphas been illustrated as comprising the pieces ofmetal, it is to be understood that relatively thin pieces of any shapemay be 45 used, these being'V arranged to extend edgewisedly` toward thehigh temperature side of the wall. The fundamental idea is the use4 of anumber of relatively thin pieces which extend edgewisedly from the hightemperature side of the wall and .5

`which are individually so Weak that even when they tend to warp due to.temperature changes they do not possess suilicient strength to tearthemselves loose. i t

' perature side of v move individually when I claim:

l. A wall subjected to high temperatures, that is characterized byincluding a. plurality of relatively thin metal pieces arranged withtheir edges toward the high temperature and provided with mounting meanspermitting their' individual movement to at least some degree.

2. A wall subjected to high temperatures, that is characterized byincluding a supporting wall and a. plurality of kadjacent relativelythinmei'al pieces extending edgewisedly from the high temporting wall attheir edges remote from the high temperature but being otherwise free-tocontractive and expansive eiects.`

3. A wall subjected to high temperatures, that is characterized byincluding a supporting wallv and a pluralityv of adjacent relativelythin metal pieces extending edgewisedly from the high temsaid walltoward the high tem-` perature, said pieces being connected to said supsubjected to thermal Sfree for at least limited individual movement.upon thermal expansion and contraction of the same.

' 5. A wall subjected to high temperatures, that is'characterized lbyincluding a supporting wall and a coil of metal strip iixed to the hightemperature side of said wail by its edge` ALFRED OSOLIN.

